Fabrication of C/SiC composites by combining liquid infiltration process and spark plasma sintering technique

Abstract

Carbon fibre-reinforced silicon carbide composites (C-SiC) were fabricated combining, for the first time, a liquid infiltration process (LI) of a mesophase pitch doped with silicon carbide nanoparticles followed by reactive liquid silicon infiltration using Spark Plasma Sintering technique (SPS). A graphitization step was applied in order to improve the effectiveness of the processing. Up to three different morphologies of SiC particles were identify with a noticeable influence on the preliminary oxidation tests carried out.The presence of SiC nanoparticles added to the carbon matrix affects the morphology of 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 2 the SiC obtained by in-situ reaction of silicon and carbon during the LI process by SPS and it leads to an improvement of the material oxidation resistance. The results show that SPS is a promising method to develop C-SiC composites in a short time and with a high efficiency in the liquid silicon infiltration process. *Manuscript Click here to view linked References

Dynamic, In Situ Generated Interfaces Between Carbon‐Bonded Alumina Filters and Steel During Spark Plasma Sintering/Field‐Assisted Sintering

“…Normally, the sintering temperatures are chosen to be below the appearance of the first melt (e.g., below the eutectic temperature) for SPS powder sintering. The only technical process including the generation of a higher amount of melt with the SPS is the liquid infiltration during the production of carbon/carbon–silicon carbides …”

Structure properties relationship in silicon oxycarbide glasses obtained by spark plasma sintering

“…This strategy involves the obtaining of ceramic-matrix composites or nanocomposites. In this sense, composites of silicon carbide reinforced with nanofillers such as alumina [8] or carbon [9][10][11] allows selective modification of the mechanical and tribological properties of the ceramic material. Sglavo et al [8] obtained ceramic laminates of alumina/silicon carbide with an excellent adhesion and higher strength values than SiAlON ceramics obtained from preceramic polymers [12].…”

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“…uygulanarak, çeşitli sinterleme yöntemlerinin (basınçsız sinterleme (PS), sıcak presle sinterleme (HP), spark plazma sinterleme (SPS) vb.) kullanıldığı ve elde edilen kompozit numunelerde yüksek bağıl yoğunlukların (%98-99) elde edildiği çeşitli çalışmalarda rapor edilmiştir (Ding et al 2007, Hu et al 2010, Nasiri et al 2015, Zoli ve Sciti 2017, Zimmermann et al 2008, Centeno et al 2012, Ghasali et al 2017, Shen et al 2003.…”